{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12",
    "entityType": "User",
    "nonce": "0xf0fff8d9c288bdb60465af7bbdf7aec0d163042ba60d5cc9d2b9601411abec40",
    "signature": "0x2015df6db1b3a85d272c96a967e61ce3856de1fb768b75ec0e27a4686b30d7535850b2976fa7ea6faf9429fc88ff63bd865f7f0839746d2eaa4c7a386b8b602b1b",
    "signer": "0x9BaE2e1849D39772019b4AC3468e938a232f73ee",
    "userId": "948584098"
  }
}