{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1894938",
    "entityType": "User",
    "nonce": "0x551be5392689836703bec7cda769231264b7ec586a2e28c908149fc384dfc0f5",
    "signature": "0x9968af988a696f7f63df42a970e12e37623e5ecc212cc38a634b0c8733fdc87c7339d87624ed1a77d74f84e071370c004d128538d1a97f7aaf914dc465b7b38d1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}