{
  "manageEntity": {
    "action": "Update",
    "entityId": "344552512",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x161660ebbb21f4c872335168f643312b7cd5ef455a7b477b79e64483f1963601",
    "signature": "0xa5bcc36afee90e0355c0c967bc69ba4a22e231f2e9de254c62503cea53a1268a5641b363c02ee25f82167db693290abf64263fd9433077ac3b7ac4233b1ef9c61b",
    "signer": "0xe1eAe9Fa3Fef187944BA6cBa5C534e1ea257CA4E",
    "userId": "344552512"
  }
}