{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "8278730",
    "entityType": "User",
    "nonce": "0xd56e83d076b9840b5aaedc1e17c1e0e608bc8bc1d37a33f9ee8e5fcb49c5d977",
    "signature": "0x5ddad8120354e0ff5630aa8fe19a8c38dd5b32f973ca685dcb35c7a02103c6d1328a0d0dd37dd0ab49f69bd51eae99276c2ac778d5214609f7b8d637ec3368fe1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}