{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "666440",
    "entityType": "User",
    "nonce": "0xed81b99aa6d9074e2db46fe1cc014273a3b569ef57762a7283016a10a273ef80",
    "signature": "0x993d6388a1fcfd0ff8a1b6702668959cb715b4a524381f2716cc0aeb4cf6910e59ad6e05abc8e4905b49335d31bbd95e5ab9b679f0163359f91759c67642d2f41c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}