{
  "manageEntity": {
    "action": "Save",
    "entityId": "922699326",
    "entityType": "Track",
    "nonce": "0xaafc113d57bc5155c1fda9bfbe17c411798e77e54e061e5d97c3cb1e670c4346",
    "signature": "0x426fa4a8077ba1e2fadd1d65a5b17a9158fdf05afafeca6ee54a3fa6fc6d351e124b0cd0d856fffe785f56ad36a96a13072e6c45279ca05aa94f698333b3cfc91b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}