{
  "manageEntity": {
    "action": "Update",
    "entityId": "300244455",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7zmkq5dvaevsnjdv6qufzv7m4x6xr7i74n3ne74s3tcq3ghxbtta\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":882171785}]}}}",
    "nonce": "0xce53fbd8af5ad4d50f1a86045d5c391a3fe9b86d27a0d18001972518a4c9a461",
    "signature": "0x6006f706f7701ba3a089d8d8744dbac3e8bc13e82299aa4f67690ea2ddff20c1156c6834aa76e2b63a0741b2a82870bb57474c0df2b5ea9350b2f8cf15a1ccd71c",
    "signer": "0x441C597b79DaeaBA9eb0B8ccA068e23c5a7c5843",
    "userId": "300244455"
  }
}