{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3aa130b0115bc87cadc611cd6b95922d996059f655399c0ea38c810670087d57",
    "signature": "0xdf34703360d0ca552be1eb7e5d37778869bf41bc80f73d846163d7887ba906d571f8ceee2729c9494c38773543d44b6e1bc4d331d6c57042de60316c5554060f1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}