{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50672",
    "entityType": "User",
    "nonce": "0xa55b453abdf111848bf12381153a905eb1e1c7f2268f9532310ccaa4a043bab6",
    "signature": "0xc3f9593730a915d3a16f8e666024f87c65cb569ddd3d0429c947c88df6c9d0ad25a5a10ca9e6b5d3ecebfcfb92e7ba528eeb9b63858c9b1bf1844ad9c258b38f1c",
    "signer": "0x573531cF89E122b68c33D7bDBb16f89E13c9D1d6",
    "userId": "406399634"
  }
}