{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "407406051",
    "entityType": "User",
    "nonce": "0x4a7f087801e14ed6508c26a6ebc0caffc330786b3cf2c7f18e4a79855fb50946",
    "signature": "0xff87590f0ffea9c47fd84d688e13524ed75ca4147f7c376ade43c41d061e947d3ccdb91d97c39510e638bc68092b5561c9f916b4f87b63372797c3bc15543d5a1b",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}