{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1212434",
    "entityType": "User",
    "nonce": "0xec53ea273e1591e4652522a0e2f71da9d2ba3c37b6b6895797e214210e5fc909",
    "signature": "0x719a07f8b618de32c24c18d2e6548ef04b80611269dc2bfd2b4319ea97db6e46686041e118487a6380e48c3ff863f77f5b11340d330d7ff1568c8ce84d9ccafa1c",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}