{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x59c98cb242db8068de134086b60cdecaba6158fa1cee656fd49eccafc452a2b2",
    "signature": "0xfd664ed005df280db9b95ce49cae8a3d7e3938a6747b3d177c8eaf16368858a6002d20592eaccacd54198832351bf4c40992d1a2ab39477b31491717be8cb9e41c",
    "signer": "0xb947c8d74C81F96311AF654D6943a3828370fD24",
    "userId": "143893859"
  }
}