{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x298452d61a9c39647814f5d8c71c49f5ed907145e82e0e49bf82a73d4a8c3d9c",
    "signature": "0x8e6fd5e15f8e1be9ccd73581cc30e0c95f2a14df2ee7e0be8824afe2256c0f362cc3328fa25d3c54a60798e7483ccacca4e78a9b1078b0809448902f98c5c2a61b",
    "signer": "0xf6923D959F1Dfb3d18646BF5D1c0fCf0FbB883e4",
    "userId": "626738672"
  }
}