{
  "manageEntity": {
    "action": "Update",
    "entityId": "19278730",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x23e4681da229eb59854b6368e9b5d2b93dce84ac641c022dbc5293b2d24f3122",
    "signature": "0x973faaf1a9796ad5f4804f2af2303dd29f41e41a51fca8086769fb12ce0c65af46d88cbc8846698d1028a1805c5f4daaee58b2101f95bb29f292fe0a1cad00dd1c",
    "signer": "0x54beFa24e0ADb3E5a9f02Dfe043deD7f67334f63",
    "userId": "19278730"
  }
}