{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcdc3bc1e097bb83d181579cea1799be3191764a65cf54ce733f48689850aadcf",
    "signature": "0x9dda3e9cff3f4f3ef2b26f90d758ac259ac2799cc443850056b3cef2db6227547ad39a347451e51aeb89adae59574a46a0778b98438c5f3e1a33475f882e25561b",
    "signer": "0x1DDF504d670D731814644fddA41dB72Fa7A2A4fE",
    "userId": "396846725"
  }
}