{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x42acacb869b0b9abe80a551995268126ff88611423d7a479c4229f6b648fe69b",
    "signature": "0x423f8b8fb54b0de8cc0263a0aa551a7869a0b5e0ec939c089c11f66c429d177d1016ee94cae27cdf115e0dc122a977f7f925ada6072b662b455f9f3dc0df4dbf1c",
    "signer": "0x43138Bb0E0DC73645D78d006b44b4833ee194c92",
    "userId": "187777759"
  }
}