{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "649484997",
    "entityType": "User",
    "nonce": "0x9ef98aed53975d6cc8ae2d0dd4d56082691b9b8ca68114cbd7677736d5dbdaae",
    "signature": "0xd64f8f6e4e2d25e78455d3e96d9e1e520afdc43057cc3efec69578849fe505f517522406543f9e22f2dab5a32cd4ea75a14d4d2aaf2143c947e6adec0d82de441c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}