{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43430",
    "entityType": "User",
    "nonce": "0x9108ac2978446c79744de80a78a441b38b0d8f178e5b2c44beaf5ef661a0a089",
    "signature": "0x8e662fa8124a9b0d0300b8a4115387916fc738ef6d2910d80bf4087634fa59e60ae98d43e24f2225900733218033e90121226c1019b3795bc8bc11ad01cae0811b",
    "signer": "0xe4C0C440180A628EAF39D8c3fE4aEDBE2CE45aB4",
    "userId": "754624586"
  }
}