{
  "manageEntity": {
    "action": "Update",
    "entityId": "902919203",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8341561e8b7e596d3e0aaf8266fc5764f8d9513ff0e4a6ba19eca228f6dea908",
    "signature": "0xe4371cb6429d8982656dd037c2c1bfda9f290e9b59d018337da90a58c587e0b44f181767eda1c959e81f1273907ce3866773baeb10c5b448c6df637dcf538f7d1c",
    "signer": "0x0B8Ee9C69e97Fc455bE89f6992ABd35789739011",
    "userId": "902919203"
  }
}