{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "76890",
    "entityType": "User",
    "nonce": "0xe69fd3d76a8525ce3adc284c37e18cb243bc7195602878e7c2039745dd197977",
    "signature": "0x13fc5ca8d4b22fcab5542d699c7d847e18bb758e1f9d8b7920d851ae343e56283aac3536a2ba94b46bc9e8a10eb599bea60453f33f450691f2ebea4dc5c66bb51c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}