{
  "manageEntity": {
    "action": "Update",
    "entityId": "321264851",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7e6d256033e5354ca0e2362f2f86776d4ea2bdf13bc44abba90646d69ebe9519",
    "signature": "0xdf09c8e20228d62f006a27fdb6c4ab7a17da2153da87f41485440280991bfd376730271590151f9c44663f15544db6b33448b423a81a65cefb9197ab2a4e6da01b",
    "signer": "0xca3f5Db0A8e57792e9A9FEcDAE13e82175375dE4",
    "userId": "321264851"
  }
}