{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "237640",
    "entityType": "User",
    "nonce": "0xf44850d6cef227f0e749716d464d9d20c0dea40a22b789f1935342ec04367942",
    "signature": "0x15eaba0149b3df45444c747bf777f4a793e3a6752429a2c52b023b6219ed1bea3909c4acb0c9d7f2db5fdda3d1750d72d9f03cbdc10b041650808d6970db1a0a1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}