{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7c56bcfdb336c128819efc907b504e9b43290bca1edd8028f5f0e92dd00d0430",
    "signature": "0xc63b8ab5a778c37ff63ea19ca8dd4e0b6d3ef8b5cd52e650029f1e7d89d67c7252386ffcd8ea130b806d636ac2f39227d8e725e03b94ecae8a185f772064664d1b",
    "signer": "0xb1Be95940418517Cec333a0EDc43ef8C49526D97",
    "userId": "880371333"
  }
}