{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "700987756",
    "entityType": "User",
    "nonce": "0x7b5dbbda9f55f63c154defc7d0b9c481a6e526576316abccc13c5ec740df11c8",
    "signature": "0x743c91a73eda96c0019f6d5f21452f62033539d71af0e0fc6a8b20673560c08f24b0509ab807d0e38a018d780b47487d0e3644c0dc2e7374f086b4fa091d40281c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}