{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "520958130",
    "entityType": "User",
    "nonce": "0x6bf33bc230128a1d165f0b17cfcfd0587198574587e1ad336df26a45bc7ef065",
    "signature": "0x4bc14ce85e276aa0a7b4cae04fd9177971ea07e9f4f7b71ca75d6754efcdeee40c22ed0dca95a2c1adcbc32f0a694c3f38963476b621de851844b8a93dd43b471b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}