{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3d85b3ea8424c4d43333bcbaf90c697d049a31c2ad2f0baffddb9ee6f40b5014",
    "signature": "0x3909ed581093d3251b65f717d06fef17a68dae2020a5c8ec1fcd3c57ee864df12ba03104f1da943be1e211f07c1b699e81daaca32995ce35d3ae933c7c58dbe91c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}