{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8284eaed56ccaec762718ed5ef06af6341d0789dbdb7b154bbd18acb609f805f",
    "signature": "0xea00cda95c6c6f590a700f088f31781f0150cd94fda7132f0f8c3dd7d295651b31bc1482c067c29043dc75358f8927a293b6db7c445bf3eab44a98114eaf4dc41c",
    "signer": "0x5b6D9d3afe306f40BE0d198602bca5B649F35ccE",
    "userId": "494560878"
  }
}