{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "390804",
    "entityType": "User",
    "nonce": "0x4f612aca1c8c4e28385049b95105835b6c0bceea08c7b9dfb4e0f7e0989ef1ea",
    "signature": "0x893160cacc563e0c3ab986b968e6ae66c981d9fe675a9a7e37a1c859df6669ac5d26e169575823d58808ad8b4d7247c9e643d7a2346553605f14494582d39cf71c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}