{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "289756",
    "entityType": "User",
    "nonce": "0x3956ebcfb2cd8373d5f42fb8cf5719459a9e5b37d8ffa2e7b68aca29a12b08b6",
    "signature": "0x50d9d195fc63915e810d8350654849fcdc6f21929935807f26476a94453306db5ad34a18758dd747e5c49ccd8514c9f9d772f5a62e48651cba9d8528110924501c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}