{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "298566",
    "entityType": "User",
    "nonce": "0x4b2fad17bc2d34f5f5d799cd1e387208ab203069758337ca4395691a00b6e463",
    "signature": "0x1a87c6858a4e6754c742f452df323ea14fa139787893eab40f21fd0a534905444f32e547afc79e5ef2d9d47670bf02c8fb841e5b25a61376b1e4eb20375e50bf1c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}