{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "367647512",
    "entityType": "User",
    "nonce": "0xd99b5587147fb70f6a82f539dedecba8eb51f263bacf41cdcc54837ae3e8836b",
    "signature": "0x5e7ffa3b29314384f0fd9d64b09c1a18b0c3e3e476e177c07c7fe30da906f5cd5d68abfe945b9a9988df8cda2b44a1b5059514b4596a230eddd2674e0d41c1f21c",
    "signer": "0x19fb45DC2c238C8e4abe5659E910fFa787f2eD91",
    "userId": "156440649"
  }
}