{
  "manageEntity": {
    "action": "Save",
    "entityId": "1531083820",
    "entityType": "Track",
    "nonce": "0x3766e942f7cd51748f26e3a46e432653dffcb2f5bd309c35c51bf342e490876d",
    "signature": "0xa22fdbeeef8d8186b85ba0022645e218f127b9db6dc80a5326666b1eea70e69b7776cc27e379267cd9b412599aab0e157ae3337bda0edaf58068a6929b49b2641b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}