{
  "manageEntity": {
    "action": "Save",
    "entityId": "1862871718",
    "entityType": "Track",
    "nonce": "0xd6766be016169a4166eb9555ed57d2b162a3f6e7336af3ea05f228790694245e",
    "signature": "0x83beb8829520bae9748d90bb8d41c7f5f930dd095736f580e25116b025d0ed0f2f6790b81a0bead79433309b63def3edff7afdbdd8d99cde0174800c0b6637d31c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}