{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "396164",
    "entityType": "User",
    "nonce": "0x0cf28cdd9a5f8461c581de8473eb35944fcf1e5508a21ead26b2bbb6cdb0dfcd",
    "signature": "0xc7091bb0f561ac4569ea153dd1785c65398044fcf931317a54c81410c8aeb4ed248041b8c73695efb83029686cf245cbda84d5b58216f14f94205f7e45791f9e1c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}