{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "300826612",
    "entityType": "User",
    "nonce": "0xb1416dc635aecdc02480326e3fd3fe359df993b000e2612be54e0133a289ca33",
    "signature": "0xbc7e92b5040311e2848d86257c0720208301f2dd0b5e274a75155b34eefcd6762f255231f242f9e64365bfee398b1e3fe6bf7283918d07771a5acdab0815bfd21b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}