{
  "manageEntity": {
    "action": "Save",
    "entityId": "1825209037",
    "entityType": "Track",
    "nonce": "0xfc7c785f9b8c0ca98f0aeb4d00f880dd481ff420885d36f5f4a553072c6d69dd",
    "signature": "0xa1b97a68c421aa3c2735733a40eb5edfecb012d9754aa8f236edcc3f19bb69d9776f728c45540819a8936d1e8b7ab6f12d0fc4ff7b92d420790a382c9d14af351b",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}