{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "323272",
    "entityType": "User",
    "nonce": "0xc91b39a5e39b7cbeecbd8419bbf335cb79d70ac5c8e5f47d601edaff4048fae6",
    "signature": "0xa5272dc003b44c9e75bd4bf61b8308fe8acbe84cc6b873a5b569ca48d2909bf304849e08a25a3e0722dfaf6a53360651dc9b2b11bb945bdf038e9f39119261421b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}