{
  "manageEntity": {
    "action": "Save",
    "entityId": "1002331819",
    "entityType": "Track",
    "nonce": "0x0f96715ebbe39cc6765609916e2b82374850f4b10d6769c5c7889cf0d05d61bc",
    "signature": "0xb8e5a874e66ffdca55e7f3691a935f56c4851962796a00d5573b2c059ef030e331374450d9c366f607f1bea5e32ebb096ca0b05be23887b674c66e18b7ed98981b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}