{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xa3881736610d4392863503d599a387962d5d9046186849f41665afb1e79bc0a3",
    "signature": "0xf28a09fdff584b1d1ad6b809bf6ed7b0ee089f4a906ca927b91aa9c5970c4eb92bc9d44973547d148d93f6666899d1b5683636ec3376f88d531cfa83212d8e161b",
    "signer": "0x9d5d1f1a59bB255396F7F1e7DeB307A4F66f15ec",
    "userId": "429311703"
  }
}