{
  "manageEntity": {
    "action": "Save",
    "entityId": "59497",
    "entityType": "Track",
    "nonce": "0xb8e76b4f62efb86ec44e1688fb9e79efe404a2d6308e3a25ba78aff28713f384",
    "signature": "0x582a6e7b2c3ecf4db3d5d5a22fa784f5f8716e133f56ef0c69f13e6b3cb3fda747abc418cb011e3f02374a0950138e87c55501201352dae5428c8c7c40f6e8791c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}