{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc5bf707a457ed7e9f478ce29a01f40771ad967e46a87c1d19937052e55bf08a2",
    "signature": "0x7a09c7f68bb3e5b0ca7ff3403538944087e53fc56fb8093f58ce1891e38fcf910b436388a3ba753822a060876fd1207816062da36cb78671c0ebe220f9e5417d1c",
    "signer": "0x4Bd99c6c0D0eB2ed200b58e7C1F52c7d3962A3b5",
    "userId": "72043034"
  }
}