{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x753d1882ce1d0b4f69966066d8a183f137deebc0ff58d08408576bf2c3161961",
    "signature": "0xe25e79ba9d34ebf44d50a9930b18d85e8a0e505557d150a0fbad6b70de98a93f01dc9b4e236a9706a4c0f0e1b65010f76b3bed790aa2eb62f6bbaaf85b9cf18a1c",
    "signer": "0x9B8d44671FCca15eF472F4e525D2dE4C5cE370de",
    "userId": "709092909"
  }
}