{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "360621402",
    "entityType": "User",
    "nonce": "0x0550605329c86d3d3d889a9e9de601ea82585a51f0d5664d8a35e60263507c79",
    "signature": "0xe4fa00ddec0ae8f4f7d1da4e1f8e885d7ebc79cbf74b5d9e5f096554ab9628ce111dffa701c07cd8507a60fad74a66b1f1d3bbe60c50730f2525fdc59b29800a1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}