{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "800713840",
    "entityType": "User",
    "nonce": "0x0b4f4d29a0eba2590dbf12c5db25bf51e781d26f0f2f32134bfa85a6e98be7f5",
    "signature": "0x638dc4c0a2eed674d00d9f016d414347e94a9950791a4e057ebcda3217900af375b44ede3bacd3ff664ab3f0ae5843532ff3fb9a52ea00520f81e558e9be5a8e1b",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}