{
  "manageEntity": {
    "action": "Update",
    "entityId": "478300668",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe1d8e006583368cbd7a7d02274e10aa461b7077fc9a3c0b2e2bce2f74de05007",
    "signature": "0x3ea35acde5af5f5d73ceaa48bc46a1378d5e69922285326a51ec5b9f744731f4477e448137e3795795cfbf21e5572a70c6fcdeb22b87a52288a2f2e6e6f6ba5c1b",
    "signer": "0xcc786CcC436a62716dA9Bce318d278C27d31e9A1",
    "userId": "478300668"
  }
}