{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6553bd538d5f2bfc54ed7531c462bf1fce6f7ac4c58ed59b43130ad79f8639a7",
    "signature": "0x1f86e68263ed23f23875d2a062fe817259d34107a73015cd31a03876abe1a9b934f8500e1656bde42120f1ade9a55fb347b7a55305a6a286abbcd18f5561d19e1c",
    "signer": "0x10915d5e626E0A08064f4c9DDA546bDEB7Fe4258",
    "userId": "871588792"
  }
}