{
  "manageEntity": {
    "action": "Update",
    "entityId": "790717795",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierav42vqdc47omhv6rxayfri4njpevvy4sdqcjgshfjqedvin3whzpa\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":94845308}]}}}",
    "nonce": "0x5b2e48c81b4995064cb5bdf6b529a0f9b9ec1d436f8baf2723a344d6ab5245c4",
    "signature": "0x4029ccea6e1297428def5a6b63899b5877399072cdae3fb0a39e10ba6dea1a8e0ab551e236c82205014234c7d36079b893883a70b20013e1eaabb6d833ee155a1b",
    "signer": "0xb15e0969937058c681E67343137f40F72F50d99F",
    "userId": "790717795"
  }
}