{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x6ff9b70911c51a527ec702cd4a0dfcd55646f3702d5ab1b8c47e837dd292020d",
    "signature": "0x519b3ecb572964adaa2554295f6d144bc4a71f2c7bc3fd60068b4b3c79845a6f2e043ad4d295353effcb9cc14db65d4130ed795a455da4ac68bf287e362253571b",
    "signer": "0xE12C4999D417252c0f02E160bce541D4E85dE1d0",
    "userId": "166066089"
  }
}