{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf15543347a9ba97c30800fc96cb2bb4dee1d6c66800196a858293d0724910600",
    "signature": "0x2e490522c7559166581fcc3810a797fa9ae657548351dedbe55dc53676b3ef324586a6ca0446bd3a4e2fab40d41271f06829780d526dd70ff870888af96dae3f1b",
    "signer": "0x66796E038220e89b68902Fe48f3DF10fa503b0b1",
    "userId": "547965100"
  }
}