{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0xcd3f565a657b2efa0a4b91592018a83567968072cc5ee2b28f4d5c776bbc6783",
    "signature": "0xfd9a0491f01090372caf63850df64065cb82e26830096ee2cf1fbd42572ca42303c5e0f051e71620b491715aff02a7738f8beab67881f47c4fc52b9d47ecf3861b",
    "signer": "0x607D26fCBC981BBf1f9b7a1ee2EB8444b128239C",
    "userId": "68884680"
  }
}