{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0x1a0f677d7d52dfb1755e7034075e27df5739728e1fe79136d5caf2e661e84117",
    "signature": "0xd1d8195e1fe8205cf77788861b522593436db5770f4746971ca8c4a833fe07ce323228a68fadbbdea1624440287490eac254dacc3cf87df8536cb8348b110ac91b",
    "signer": "0xa9A8559aCdeae56016E2c1656A641b774DEE9c20",
    "userId": "48923931"
  }
}