{
  "manageEntity": {
    "action": "Save",
    "entityId": "2059114646",
    "entityType": "Track",
    "nonce": "0xa746967790a9d73bf8bc3104e917529141f3633f364898dcb26c699a15ac8dc3",
    "signature": "0xc9e244acbf244ff33171bae2cc2e3a4b95ab1f41e973803fdb5bcf2a650c070126f08c0c4ffd35f06586410390bf1a7beafa89893f5c08ad88bc9e571271e0af1b",
    "signer": "0xD9254B079e0e1571E56512C57188F2eec899054f",
    "userId": "854498636"
  }
}