{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x1916881e5671ddee9a139eb36f1f8874b1569cb8099a4d81a92607837afaa8d2",
    "signature": "0x21809c2bc22bba6436cdafbc0a493d8cdcf75a2d616cc22e1cfeecd176d912b25d7fa23b187dfb7c7d7166aaa8d5e41ed344b8493640ebd90a428ff32ecd477b1c",
    "signer": "0xfa1f98f0530E55C2BEFA45f0F1B3A699b4559136",
    "userId": "149566028"
  }
}