{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "755516",
    "entityType": "User",
    "nonce": "0x5cd57234e6afc3f0e9d3508cf189da365954c6defb8ab80e19ee34e42a3e5787",
    "signature": "0xec028041c08d73fc2e2c23a32107aaf284238d53a2dc58f7d717c810ad2668bd4ef82f40083ed8bbae038757b1903761b96f7ec230c5a55a31f88c73f013576e1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}