{
  "manageEntity": {
    "action": "Save",
    "entityId": "1131775307",
    "entityType": "Track",
    "nonce": "0x9cda0a973471e2a6cdb9359613075bf7a8188dc50f5622567cc4fe0b71e270e6",
    "signature": "0x31fcc56ba12490c652206226918a9cdf78322a3e30ad76bdbb6bb1b0e151ee7d0cdf44c3b57160a124b66e7ed872a62b5ea41ef3b94d517637e736d513450de51c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}