{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "171594868",
    "entityType": "User",
    "nonce": "0x5a880230f63083e3d2442bce5a6f09423783e455623d16c15f60e8f90969ba15",
    "signature": "0x3c3ad871957eec2b61c98074daefd96409b59d0ee74cef84dc64aaa053b6aee73cc97612e24190d5bda67d415ae433c22441de067b17015bf35aa1265cc0fe961c",
    "signer": "0x63d394E88B78FF653F4FCeB0AC74Cf5b064dfC34",
    "userId": "633246973"
  }
}