{
  "manageEntity": {
    "action": "Update",
    "entityId": "691415766",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera3z3pw57eabaqzj67yti3mg7gt7lekhpjempz3dcn56edkzahbs3q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":2014605355},{\"type\":\"playlist\",\"playlist_id\":272866585}]}}}",
    "nonce": "0xfc9aabc0396fa1f3407e62b014a2204683d935932a952ba87cd043848a6c4420",
    "signature": "0x9133a16f6d8c9e82465ee0a1749b343c54600be8679c11e89db3e2a7e87a74cc632ec3a7c79dcdbb6cf635a5573bab325caf6614844e4e1b5de5aaa4321e83921c",
    "signer": "0x15126b878283b8353b0A5D38ba602A649b894424",
    "userId": "691415766"
  }
}