{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "73839",
    "entityType": "User",
    "nonce": "0xef673e98d81762e600554317a8679fa44f4f6f3830e5457b67a02b16c04d3c38",
    "signature": "0xed4c8e762b9a606cc4d4d9d033b326f35dd9d1693ce4595d4a2ee6b486cfaff8710a8a6ca8420f02c5878bc08b28443175a825eeb629ba2dbe904c077dd912841b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}