{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "154589",
    "entityType": "User",
    "nonce": "0x629c6d2ef7ac4b4afbb2a7b78b3a2ca3938198124ee76c1f26a1c67a973b88c5",
    "signature": "0x1f9de03ee40d475fba883a35371d14f7bfc63593679dc26859c3c686354f22431f5b8ddf6a71cece7317e87e74a4c95c6226e97faccac4e2903813e21a78ea2a1c",
    "signer": "0x19fb45DC2c238C8e4abe5659E910fFa787f2eD91",
    "userId": "156440649"
  }
}