{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "125425",
    "entityType": "User",
    "nonce": "0xb87091abb6dab9d148499723af52d264248c309a14a247dcbf676d2e9cfe9eea",
    "signature": "0x7e787d90e5a9f28f6f49caafcc05cbd406f569a88c72a9d75c30bb9b123f22056b37d586c2f586aa6cee68400b71810efafc6870342296b8b61752aede4dc7d11b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}