{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1471156",
    "entityType": "User",
    "nonce": "0x5099b0266705e4a9f320415b55a1e75f6c9e71264c234fbc05d26beeb041d75c",
    "signature": "0x43b12f91b1380bfdb17825e1a63606cfaae882bfa217a0a8f67ab7f5cf79f2de3bbc5efa18e3d29b023813a60f2107a63a675d6b490a4c6ca1e6b610d7b6dbab1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}