{
  "manageEntity": {
    "action": "Save",
    "entityId": "1312648913",
    "entityType": "Track",
    "nonce": "0xecc09330f66ddda3d4f1fd27c9f77a623d99fdddd489f9262065ec230fcea006",
    "signature": "0xc859cda0d118c916c35d03efe4fb4272fa219d35ad688223cc594df70caf6f300a17d388d740797bacf6727b4783fdcb260615f637504234022bb055f7413d061b",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}