{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf226d8058cba6b8166d2ce0c9bd789554d90d3ca83da1e180002f4ebf8573ebb",
    "signature": "0x7bf8013b01a3a3b95b2698bbfffc1f0beb30c38b7fe55a79470c1f557d35dc891080d0a2b84324711df530c0d66f952223f4d130e2a4395801092786db1450d71c",
    "signer": "0x87DEF2d0bdBC6C675ddD944d18Fc96841F8BD231",
    "userId": "422224833"
  }
}