{
  "manageEntity": {
    "action": "Create",
    "entityId": "416005677",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"Romantic bass\",\"entity_id\":1023300844,\"track_timestamp_s\":40}}",
    "nonce": "0x8b33e4d135658a7f271d5ec3f48eb937b26a38755a5857a010dc84dfd2bbf4b5",
    "signature": "0x918d36e8cadedefe304dd31ca5ff1a9b9d4a448e32e4df8cc77e2b8a7c1c81415257a585180d9264d8091b5e411f6e328d32506cd8a569f6c25c50cf59e5ebcd1b",
    "signer": "0x7Cd44Dc53B13eEA7335A000Ce36c05cDFE34b348",
    "userId": "355113"
  }
}