{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x13ab73044c007e06265b890273e24e9c32ba7b22130f53e153f8b969d0b2d979",
    "signature": "0x56dbdc7498ad57f36774f0afc786297c56de4f370d0507ca7fe5f589305d4af63bdee0f40f0df4a629eafee339fd4280b16ea66d2d66716d0d53480705480b1a1c",
    "signer": "0xeB77b6E9cC52B8892717c003d884EBe11D8fBab2",
    "userId": "946443800"
  }
}