{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf38b432222946e4beb75608c2de285101d4a0d9f9b8186c87f812f66b22d192c",
    "signature": "0x819e2ecb31aafd2b93865426ae605cc827795023d2f2c5a8413bb18817c6119801a301a86de0b73ab3517b4ce8efd3368f23ef6f2802c55ba68ceb6811f092a71c",
    "signer": "0xE35DcC5C816D790A9f730B4696F43Caf64d5d1e6",
    "userId": "603916020"
  }
}