{
  "manageEntity": {
    "action": "Update",
    "entityId": "776850188",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xac66bcabd755ac4fd7cab0ac13ebb913c4629351bf88e926881f669d46209cb3",
    "signature": "0x98f5694ca1cf23aec3412a2f6f3e4faeae81a39173411b1fab3445d289bcf74e2d878ede67eb681007115e12b5ef7a3e9a416934b96065e36cfeff7616812d5d1c",
    "signer": "0x52736F67C02C10d42Ea4e6262BA861E854f87423",
    "userId": "776850188"
  }
}