{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "77442",
    "entityType": "User",
    "nonce": "0x2338d78811e5eeb21af79f3f2c7e2e6e9fb23291d45a78393e8bd0bf0b34a05d",
    "signature": "0x673fd93fbcb47a1c62491682d63e646308a0cef4283fd5376b8760056ca17a615824eef895ac42e09c8dad8a2b3148c6b62b8d440721dca4b8619c3d025534ee1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}