{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x49103b2ab754b5b220ea44936bddb066ecce0b9333c7016de42b0377b41616fc",
    "signature": "0x260f79a8bdd6bc04f238bec1c588ae73702fc7a7097a835546d7ab4b67939a590e99a52eaf08ab15da4f621fcf8f78896ac8a4e2ac6acb1f083cfde62994c75b1c",
    "signer": "0xEAa30C2703230eA012B20F5ee1e2927e12EB311e",
    "userId": "255779716"
  }
}