{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf9cb9d0b8379a21a7e6b1ec81dce3d449288d0c6f86363f609d92f384917dfc3",
    "signature": "0xfe108d9aea6bef7a1f60ca3c715d7bdbb64c3f0f8a3b58713646423bcdd8f1c70d6035f7ebd33b0fef8f229fbf9bcadf9b96907c5282e77416703d2c8570567f1c",
    "signer": "0xd65AAde8ABE0D22385Da81304F9b6D5d4cFb5491",
    "userId": "240553252"
  }
}