{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "687525",
    "entityType": "User",
    "nonce": "0x640b98c68378caf86bc7bb04813f43cc2b2fd90cbfb1505bf60227b9cecfb513",
    "signature": "0x56aa8b22f55bbefc298f24cab3175d6c6723dcc1b68ffa04746b9312e9237449771aa31c666b4b43f08dceaeb97312e742a6e9654c82bf5511672e49f3f5a6a81b",
    "signer": "0x8fb06be829c5718Bb968af1525d910B795617ac0",
    "userId": "950478625"
  }
}