{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x639f3c166f7f7983a8822fe9aa5d83cb13ba89ad280bd19bdd67e63486990c56",
    "signature": "0x9155fb8fff848b6ffbbb258c1d9453bcac05fb52017fd7ba9d68bb6a0c69c9e07cb8eb08b987f3453a29e9237293ceb2bbeb9a03c6f37d51986da2d9d78f68f61c",
    "signer": "0xb17bd5Be74Bbbe06Fb52cE5F0E1e373b5638bae5",
    "userId": "392710616"
  }
}