{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "283478",
    "entityType": "User",
    "nonce": "0x73617bfd8817a755ae0528e26846a626960fcd2b6d5173161b4324cfe1a0ce1f",
    "signature": "0xa4de2a3dacb5988d5ee5e11d113d873f3f3bdce87aee37c14ba3ad578115a1fc5c9bd0c0a4c6cf4fb963a4765c50b87eae54d7ba8489a7a46f450e7c49cd4c251c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}