{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "397390",
    "entityType": "User",
    "nonce": "0x03208d87085671cc73af816665f8d235899749f0ea270e7911e2f1b4d6449359",
    "signature": "0xb052d56bde1df3f5479bac6a60fc270cd0438c143bc982b17afb2558857e3687794f43ab14789599b97038401a6dd12173045e97d51acd83bb9fbada4ae101471c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}