{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x43751ff46e9c5de62c90670bc776abba669f61e39556f11ced79af1d01bff8d2",
    "signature": "0x9c6eedcd2245fb3f2f0a7dafedd9b45904bb8598af5beb807615b1fe5653bfb07fbb4e7df1e515116b71cfa840fa24dece0b8d21cef753875fd09a4e34ddc64b1c",
    "signer": "0x9976815585C2991FDF41607Ac075A4Dc161C0BdE",
    "userId": "260693348"
  }
}