{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "107258",
    "entityType": "User",
    "nonce": "0x5aeda9db94a6deedb96c3f45116742a811969ef6d883f5edd1a527b059f0053a",
    "signature": "0x21f443e49386e076272d8fc2d14c53b6274ff27a3b0419dfb96e755edccefba7044c71d68faa40916b5f3445ac70a79d98c81da328b78b2f1073ae747a5047ee1c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}