{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3407",
    "entityType": "User",
    "nonce": "0xd2bd6893f3f880cc35de89d99f60e188610f6d3620decee947c9ad3d331fe497",
    "signature": "0xff449ffac76bd854861881aa354cdbd4e8d0a38170e04faca17e890b1842d66e26ceccc51dae3c39c2812592c8c9160ec651f3a907e38107205cfe5b2c883ee11b",
    "signer": "0xfa0b7c5C31eBA7622AfE516eb7b8aD45EFB4BD28",
    "userId": "734513560"
  }
}