{
  "manageEntity": {
    "action": "Save",
    "entityId": "176855197",
    "entityType": "Track",
    "nonce": "0xf1044a2c860f8872ce80f4e66aab14a5fd71a34629e1bf0bc8bf8d8f21d1a50d",
    "signature": "0x5804e8e4a870c5db83cab772093262916465b3758d0ea47477662ef80681d2c2651efb3214e7e25f57b230625e5caece713abacb485c1436e223bbe9afbd331f1b",
    "signer": "0x48c57b64a5a12Dc7C7742Fdb629EEce52FF5591D",
    "userId": "930634116"
  }
}