{
  "manageEntity": {
    "action": "Save",
    "entityId": "1192958931",
    "entityType": "Track",
    "nonce": "0x70d8096d830ea03786b0f58f706f40e62c03a25638ed7ae6bb81483d2088b0af",
    "signature": "0x4740456b41db93284208872a4040b228fe84b10bcc842cc300482313a4c5c43643bd1cabef7744c42d94e507e7d0a5183d651a55637e353c20b5531a21036a481b",
    "signer": "0x2ACda02e37Db2DC08f82aEFAB268F0610974bb3c",
    "userId": "416239376"
  }
}