{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "582496643",
    "entityType": "User",
    "nonce": "0x1768b120b60317ce85b77c84f8d1e8e8829cdb93b58490f1dc767c9a6fe969d4",
    "signature": "0x75ab4447e1fc47f0b931b9b572825203530e8fa7a6a0a334ff51a62da49f6f1402e8f17b093dacdc4780ee428ed3c4ca99eddb5b97ecf539c2b2141a4616d11f1c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}