{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0xc4680fd6b7538034a0bcd59f5ef224ccb1d649df0ef282d6ff4295586cc4f136",
    "signature": "0xb5d1e4e4c48d6dd7865797c0412988fba4989d6720d184e1601c1e9fc77e89960a436ac52e23b6647750b9fda52b66ca58992d1b562d706aabd6fc1f50c359441c",
    "signer": "0xe083C6657964CDF8edDa4A2141B67047B9816C35",
    "userId": "861832117"
  }
}