{
  "manageEntity": {
    "action": "Update",
    "entityId": "588820841",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0fde2c9a55d52d350fe46ee10736c74e403f8cf2e91eb9b4a4cbf56be05f3e3f",
    "signature": "0x8b2eb18016959f8afb5a7a6c9aa40e58fd43e628318f0b3f53778bcbb2aa96e559ab75d12432641bd049f9cae52536e9ca41ac527973b5d61e3f474255e591ce1b",
    "signer": "0xb0796D9597e8ed880830530759192d5b5902Bb31",
    "userId": "588820841"
  }
}