{
  "manageEntity": {
    "action": "Save",
    "entityId": "832489",
    "entityType": "Track",
    "nonce": "0x4b2a5a7e6b310971eb626fd7e3ee846ebf8df76d7fc7022f3bdf61c90c2527b5",
    "signature": "0x12489432e0da76e0da42a4c04b48630bd81d23a1392efe03186bd38882705b6d1ff832d1d84b6388c4753f738d3a7e42b0e4856261df6546ac261e4867c6f3f91c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}