{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "787961301",
    "entityType": "User",
    "nonce": "0xb68774410e334507ef26295e0ad279c3cc2ac04c16858fd2cecd5d7aea39fc78",
    "signature": "0x07d06bc4e501c603bfa1a116d0bd9496d42e0c87e414292abc0e1ee8a0d2419823038090b2eb43ec5e04a8ed8ea0cbbcc11287211ad00f4ad8c98738b58692db1b",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}