{
  "manageEntity": {
    "action": "Save",
    "entityId": "633042969",
    "entityType": "Track",
    "nonce": "0xab714c92e4808b9564214421d3894e113b051f253dc446ef2b505ed48a6f3b3e",
    "signature": "0x42432ec70425287d5bae13593f8ee3fc5618fd2693c26ee1663feaca5b77fb020586a96bce088a6431a8ae4a973babc4f7527cc7bc27a372ef5e3db2725caf081b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}