{
  "manageEntity": {
    "action": "Update",
    "entityId": "654530894",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x147aaf3c85495d31d82fb8d46c199aa17a405aa0933c98d487aedba999bed0ba",
    "signature": "0x0a2b3bcc3906725918975f3b04cd356014e84a73d96a0e1cac2c102e5ef4e51a235f19c0adb47beb0f8b82c632dd19632bef0b3790b1331b5ce43bb41f2f66511b",
    "signer": "0xf9Bf82B2ecB609ee37250F00C0835d529331385D",
    "userId": "654530894"
  }
}