{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1931557",
    "entityType": "User",
    "nonce": "0x17866c22d79f9db5342fc075997c76d82f908371bde8d32e7e78f82140331cf3",
    "signature": "0x6a684e0b0a8605be9670738278aca2236f85d7b0500c2717cd1cf9bae5d8c4177f3c34a66a6231697aa32d3d7cb0490825678be63b53a44d7d3064b44aacdcfd1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}