{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "901870302",
    "entityType": "User",
    "nonce": "0x209209883635be316a4772f587aa9b34ad2ee19fe2de2647783de2e33de40941",
    "signature": "0xbb41a3da7bd4d2256031d66d93e98c9aa18c1a91391a50a71bbc6f5dd697636d72cb34af982e88634017c679a362c086860881ce872b8e4e0e7aebb07535e9571c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}