{
  "manageEntity": {
    "action": "Save",
    "entityId": "1151046914",
    "entityType": "Track",
    "nonce": "0x17bb223f6e2192fe320e841dfc7a8a730aebdbe17016f759a2e3deef677becd7",
    "signature": "0x099caa92f00517bb12cf9b4dd312b5870bd1ac61c645b1d9afca00c865b2c15f4a88243c299c0332c34d1090add669890de55a1146a9a33cbd9f59330805aefd1b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}