{
  "manageEntity": {
    "action": "Update",
    "entityId": "142183277",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x60bfce36cd4b2d4e850d7cd8194335efd7e8a6c8c335701f534468d56ae5df4c",
    "signature": "0x1bfec41ac7833c25b1d98f08265785f9b3c227d41dd2ed5374bdfbf637418c2a66cd92378c59eb443ed533f33abb7938c86a1f2a726316b256d366b7afe51ed41b",
    "signer": "0x30cd9c7E7be62e3166c6CaE2d68f8E19ca184b40",
    "userId": "142183277"
  }
}