{
  "manageEntity": {
    "action": "Update",
    "entityId": "144694181",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x59a5021e68dfc65f04988ed18906109dc9ea1ac3a97ab0e8f35a6d9de17b0b07",
    "signature": "0xa3ec2c6fcf8ed3e02af2b17d102344cf0ffecdb1fef85b6939eecfc47bc182505797f62c659ef30efbed0a89f56d4fa181a98a3b7b705f091d51567adc01a5be1c",
    "signer": "0xbafc6805d7FB0086B9321532c825BddFD2041f88",
    "userId": "144694181"
  }
}