{
  "manageEntity": {
    "action": "Save",
    "entityId": "1108150041",
    "entityType": "Track",
    "nonce": "0x2c2b82b33b66c8deed7d37b2c6522d6dcf6c01dfbaf4b47c59db05a0b9391312",
    "signature": "0x625acac8ee33f247ecba7de93c0a10fde6b028a3cf8e78317eb154950bbe622922e8bdb2a8c89ed22302e4e9ea945d16ef87412e000d69851f090696135dfe7d1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}