{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x55385b5bc9c53e3ccc8018d8c9a9a71d59d54531393d6053b03269831af67e46",
    "signature": "0x7f082d156f0105660ff40a81a8c61d5bdd7cef2bd5b1ba2b12dca04375c55c1e6dc5530af9ff46e0442a3841c67240d8df30c028e69b71b4ef4dcc68cef5cad01c",
    "signer": "0xF3E4205Ca476f7Cb6922c8E8D4bffD580901b1cE",
    "userId": "6077"
  }
}