{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "294422",
    "entityType": "User",
    "nonce": "0x729d75eb8b15d4bed3a93eb0c9ebb99eec4ccf808595ce672fd602499e51275d",
    "signature": "0xfb056f1d443ebde473346b82fb89b2e891327b50a1d1749fbdbebd80e80a9b207382322696dbcd0556dca7e1a6ad0164242e5807718acfe4a8b2d092d0b5371a1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}