{
  "manageEntity": {
    "action": "Create",
    "entityId": "1492630776",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"Nice drill beat!\",\"entity_id\":762287,\"track_timestamp_s\":69}}",
    "nonce": "0xe6c40cfbc947560ca3b69fc8bd32912be26c213cddcec1f6cce53dbda16fad6c",
    "signature": "0xb75bf01f3097c5f2388d7814f5ab75a5e81334205036379619fcd842a5c1dd3a78018115a41739bbfb73f9d3c325dd7b802ff5e2e3be495ebdc595c6687724681b",
    "signer": "0x95bc9101F0E3125Dab3b9e39ACc2b72eE7C8a02c",
    "userId": "380062588"
  }
}