{
  "manageEntity": {
    "action": "Save",
    "entityId": "943696778",
    "entityType": "Track",
    "nonce": "0x887196e6d4c1c01d183c064d5b1377d122492c36b15369dd0454f84178565a97",
    "signature": "0x0e4525a947e0147319ca2866d79ed533606e30e00bd9dd65a3d2a5d6d184bbdf6a6580d5db9f8ff8c14da4a8001a649ea7e50db97f2cd7032bdb5dddddd4c90f1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}