{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0x469c6940b8e240e034f4c8abc66a9059da01228c358ce13da824a10bc3744dc5",
    "signature": "0xe61b59f0eb561c0f31e5ef6282cb391f8e72d90b07b0a3cdaacd77f809aaeb944d0cc9b148ec331e7df500efebe482d6f98d3ca64306a025aa2124d5b2275a9f1b",
    "signer": "0x16D3bf5a80bAfFB2f1550d49b1203D4CA532DA1C",
    "userId": "1994482"
  }
}