{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3306",
    "entityType": "User",
    "nonce": "0xe51beab0556adad45731f779597b86bbd27e0dee05fcf2a9f38460faad1e72a2",
    "signature": "0xc19b21184a0543b01ef05ba77002a12c51f76f032cf8c421476b0cd27bbe95b41826003a47c19db942ede475757762f09064023a706f3e0e6aee4bee97c0fb131b",
    "signer": "0x222534475146193b99B68F2E3830ED2b44307C2D",
    "userId": "991417453"
  }
}