{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc50df990deb1d9ca176debae0aa3cf1d6f2f5d0ec088f1c6fc674da4a81b2064",
    "signature": "0x6f96e9a089a58147e09d0f14209258e3cff65f71af0e0345c5005c939de5bc380e6932c8ef48244ea86b25a83fa2a961ecc930b3246d1457d94811ef53df870e1b",
    "signer": "0x8C8fe19e85A9cde4711bBFca7028c0d34cAe0222",
    "userId": "491002213"
  }
}