{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "883647137",
    "entityType": "User",
    "nonce": "0x5d0b4af9207e3c1f9e115a06ecb3d1e95f88664048c62ff6065ed5bc5c29be1a",
    "signature": "0x36afc7acb2e65cce4832170820aa29fc7d1ca72bc75a551514279d8a44e60dcf6a09f51fb76c707df1a3bbfdeb79eee2468b8d45be610fba01ae6ae495f9fd8b1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}