{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "351225",
    "entityType": "User",
    "nonce": "0x9ae4ebb2006acb31afd2297ade3147098c2b64c2920157ae6e5ead0156de8b44",
    "signature": "0xcb8f2abb99c6d8bbd40a4ee05e7f8e2336f43ce4def973a91934686c475a24be646fb0e666c29dd552bf8a8f2e4aff5f3841141626b7698a50ab505ab1e228fe1b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}