{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "379637771",
    "entityType": "User",
    "nonce": "0x3b672af49a7aa4fe6638cf172e183002af356738dee4003ad450f15044a3d9bd",
    "signature": "0xb4532912244ab163068e249be559375f4679e05f639c6be4886b9c262b5094332a2af30231ba7eb30c50e03469fa5905137983d5da88090edaabf4c85ac007ab1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}