{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "124",
    "entityType": "User",
    "nonce": "0xcbf7d71fce160ddef73fb0ee90b2ced7364c5bcffc9ae233fa9eb33221ef5839",
    "signature": "0x230c6e38db5b5c7cac6746aa4ef54d8f7e917a1b336c22cacbf71571e062b1b34e74f810207add5fe974c94055e636c5ef7ff0a946c8e4a129fd2f4464bf70051b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}