{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "243478",
    "entityType": "User",
    "nonce": "0x96863998be6a7067c06cdc1a2e7447589a0c0e3764e657c985a318718dad3f9e",
    "signature": "0x22494f4281907e06710ee8ddddcd8d7f2365bdb73462802b612a48f421874e8372cb8739c42c8604c3fcdc5c98ae4decfb0891f672df79bace7f5aac3af879281b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}