{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1576261",
    "entityType": "User",
    "nonce": "0x9223fb8df362b9f5b82a9ff203d129e51db921d499442d4ee85c92fa8b8a2a8c",
    "signature": "0x4747ae6093e47d74c33860fd5657545b8df9e63c82e26f6eb8d055ba9ac37a2e372e6b08c4315b3b25d509a87875237ec9be7cb4ecb9273eff1a15d52bd820481b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}