{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "231243",
    "entityType": "User",
    "nonce": "0x1d7d510163f787eb26addc83d4db8006d660fc036d9f0c2a6d1e0d360480ea22",
    "signature": "0x58ab8786f0c35a5165ef9d27d4d74721b3328fdd877fc651cd766e481e27821b074d04bd2ad5f2252a6a7096e65fa438437d0d912f39769d77173e4832a34a361c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}