{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "407259",
    "entityType": "User",
    "nonce": "0x152636d18447ee2841134f17385cb74700690f3fb5bfb641c7aba50524b0f53d",
    "signature": "0xb6117103549149c4997b92549246bf51ecc62b89f90870765e898cea5337b68d03409cee17d9d011ff9eaee21e744f9eec573be020641e636fe3677c628ed9db1b",
    "signer": "0xFA54BdDbc2fd0fA514bA36393EF2F5a80Ee9C49b",
    "userId": "428192787"
  }
}