{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "564547",
    "entityType": "User",
    "nonce": "0x65423ca2f6374a19e06abcc74dff2128ff4900bc15e67bfdd4656357330d889d",
    "signature": "0x3570b2bdfd4c4eab2b56053fd95218f5c4e30b92bf937c530d04a87d1dfbfa07484f033cddac3aa91ffdf737a2c97ec205805d120e4108bb4823a2289c6f6df51b",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}