{
  "manageEntity": {
    "action": "Save",
    "entityId": "2048156836",
    "entityType": "Track",
    "nonce": "0x65c0615face995a4a2bb654a026958bd91ee081da14a92d8ee7977fcc5feefed",
    "signature": "0x60c3ab6e34077e7b70598623eca1fe3f4f16c874692f2c987ebf3e5244cbd20a3ab3d45a33e3d46ae9c19b923c09415c6afa6a980fab2a7e48e3898af928bf701c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}