{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "401640408",
    "entityType": "User",
    "nonce": "0xb9d9cb3844286e3714c2de47cdef3c6c56c6f4b7bca3be2250e75ecb805bc167",
    "signature": "0x7aaccf818ad7edc626152547eef8224c0bd4664537a71ca8cafc7b4a639a33e54b373cd61860ddace396108f72f119f8ca7d99216d98bd159a91975264bed8231c",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}