{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd20693837feea61a9a45912992efb985956ca8675b72726384220f8c3214d323",
    "signature": "0xb69ceb76b6d84e09d51b3be9e2ca537bf660a62fb3abb1be0d74a9c21c4bd9d74f5b139511eacfb14c5f236569121e4ce49cd13195ed296758a74541659bc3c31b",
    "signer": "0x845d1b4d65C2614aa0Abb9bDA370552e2CaF51c3",
    "userId": "676596251"
  }
}