{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x469c4ce666234855cbd64dfc0879ac5ed831fb575ed33e54a3504dabf48e7294",
    "signature": "0xb9b170f2c11750999ef8e177757a2e63e285035c0622d41d01dd592ac55c2a1a29b6133bddcac60472a80cba7a8ba13ef926d5b01b640e2111906aa7c295b8741c",
    "signer": "0xfa1f98f0530E55C2BEFA45f0F1B3A699b4559136",
    "userId": "149566028"
  }
}