{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x926f92cd64101ade7af0e55ef817e0649834b5f3d0f4f52675382c1679dd3920",
    "signature": "0xc78e8ba66a7f6d0ea2a9ece9daf109f5fad88cc6fdddadcd95261f6296910df355d63a8fe4ceba8ac1296cb3d1c293bac3e9e9af6fb546377f5181132913e62f1c",
    "signer": "0xA98d1463460E210dE5df0248b43C822350CfF9Db",
    "userId": "622238879"
  }
}