{
  "manageEntity": {
    "action": "Update",
    "entityId": "991253349",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe9c6796f88541460b872d8641844e01017ad811b67d46583934b7c7eef4b5c90",
    "signature": "0x79be0d3be3762cee332becbbc048768e10461a405d8cd9abbd32e1aea37843375f592bba89fcd1eb8a07c3dee2b11c190b54394e6bdea1ef3adf94d6eb3395fc1b",
    "signer": "0x7B8D2cEEcA829cf90c719AE77528cA6EB19065Ac",
    "userId": "991253349"
  }
}