{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "568518925",
    "entityType": "User",
    "nonce": "0x4013729e5e5720dc31ee7ea5d5a2323258de3a9c8b688446bdfb5873243a2491",
    "signature": "0x88dea1aecef49f828e9382889d2ff12507ebc9e89840eadf1d410563b5d5936032f4012f9a67df94203bc1c1d9ea6f8cc1d4037fb0f04322dacdd22c264983331b",
    "signer": "0x9de29362DF595E6949CaA2820c5c28c3D6b0CEe1",
    "userId": "857551474"
  }
}