{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2837",
    "entityType": "User",
    "nonce": "0x9a78d936dde3c2fc3ec0779c45e682aff93103fa1e90d71b5bcae9164d1ae837",
    "signature": "0xeac18a49779fcd6959c80640b4bb32dba14b1fb6837a331bbd99f1b1f90c60b63a9c0f53eaf3fd3446d01c663f47975d21d46cb9b38bd5b0c9c5587db3e963071c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}