{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1413951",
    "entityType": "User",
    "nonce": "0x59d99dce4ecfbcc3bd9dc5215c6feb4d8c458cecb40b3556b3b5d639753fcdb2",
    "signature": "0x3cb07fbee1225d832273caf9afa6d22c603db55efa50e60fc974622b8531973f22ecf4630cb9aa7412f85325f09a136717d9f44ad1ccec8158fdd8abe683fd661b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}