{
  "manageEntity": {
    "action": "Update",
    "entityId": "19049354",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7f2900239b5b6262e7411e5710807c344db4663b10e359348bc21fe7c7383640",
    "signature": "0x4417440f2174e4da2eecbf3b25ef19e8f5d526dfa443ed2fcd40d68981e5d8b33af8f8bb83503bbf77c7da769c9bbc8017c129482e53717e1a36d277864a85071c",
    "signer": "0x0f8C1E55ed97EA0E984aCB529B16f24489c6D4ee",
    "userId": "19049354"
  }
}