{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb53cbe443db1f3277b79c2c55a46fd77f9be084ad443cfaa4e3b6c92b03afc18",
    "signature": "0x09e8b5f164bdd11bd8e5ce460371f4b887918b421fea08dc25165dbb01a52d6d674e51b16eb4fdad4a0a3ef147481fca7f80605290d6b311cdd432a9b66ff8a11c",
    "signer": "0x6b7C70E42C944c78a305b0Ce56D40D43c811dFe5",
    "userId": "834623709"
  }
}