{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "464258",
    "entityType": "User",
    "nonce": "0x4925e222253dab6898a51d1372a61816b30009547b744d1bce0ebd03ecf60f8b",
    "signature": "0xfe45e27b83742ebc5291d4f7711379bb8cbdd08d7ce15be3726ed331e3e4cbd1707b7cdc645c35cbf43c61e820242e289eef360b24532c105af7b753ed25cbf11c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}