{
  "manageEntity": {
    "action": "Save",
    "entityId": "1116690152",
    "entityType": "Track",
    "nonce": "0x9ac756681e00368552d43dca89c0c5400b4d99284d8f9e27dda402988c28ab67",
    "signature": "0x08ca51948812fdbc07f50a1f8ebd4d789a38994aa03c9ff0cfd7dd852223d66c087aa566258f0788aa818d14436db271c6b940e7e2189ef4546fa1a497e7f3681b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}