{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2018345",
    "entityType": "User",
    "nonce": "0xe3a03fef9c113e174df497d83e8bc3bf5562264129283c84f749b350a13613d4",
    "signature": "0x99149ef9414bf3f107defa05e09c442f82ed98af47c28b0107e450b969b5d5864da28307342a1f9f400691f2f7fec02d3e1a08f1260ad1d08d1e07bf59e15ac61c",
    "signer": "0x12bA38819025BbDfFA647ea1021E87b778e10191",
    "userId": "112337197"
  }
}