{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x251238d091048b2ae2ab45234cc8288cecd9646ad9a38bc35a552ad096a7aab9",
    "signature": "0xbcf7f4adb640e6414c5d503437d2bb15e1286613803b33045010ca96730a60cf660ea594dbe4787c9199f99191cd41bc47b8d01358d4e761d77ad623eaddfb0a1c",
    "signer": "0x959E77fd3111DCcD7a141B901a15550e83B49F40",
    "userId": "122480393"
  }
}