{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0x1ca006ed6cbeac699d10be4bd0c151e0100a0513c872b59726b3ccd75d80173c",
    "signature": "0xef99fdb09c35d7f61f89ebf16892c4ced97ecbd42f7bc2ba316b008d2e81d25f59a834d5c7c82533a5a44bf313a56e8a8f39ddfd86385adc2afa820d522af3781c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}