{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0xe3bc89b17b2e9f9d8d31f66df5c3cbdeade57f4819d6f25dcd964008d3d594fd",
    "signature": "0x9702bf5b11cd04d3cb10cd6e6ea0b077559657ede59e56df14b61168fa4fb05c571369e85ade4610a9cffe145d8390828c11cbec3d3194420572f7241375f45c1b",
    "signer": "0xe971ca71b4ecd2A4076Ecc2C6d1f1cD72156571e",
    "userId": "943567639"
  }
}