{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12729",
    "entityType": "User",
    "nonce": "0xab9c15de6685f1d89f6b8f27276cf6264152f3fea5a129a1ee45d82a1e2bb94c",
    "signature": "0x18ead27fc4850428500e684bd7ae4e852edc41f085ba1b0793b85b1efc5c39e80806d51be76741414ef188d647e645c261989e18767f88805b5c4c81bffaabce1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}