{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "74203",
    "entityType": "User",
    "nonce": "0xb35635b61020be4a7de5d6c7c173bfaecf20cc37031c620f4e8b4b1ff22cec01",
    "signature": "0xd5c127a50afbc57fc02d059c36059239d86548045780b508c5cce6d66b9a93db4207c28e7f675546f46e907bdcf2db684b95769e7e4d89adab825ca2ecd241991b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}