{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x88c30ec5ef4cbdb0f66b910de0dc8efffff7565da3ae0252c6e019346f31bccd",
    "signature": "0xfd9106a60c9febc2073470e7756a5d78f8a637569dad95be8f938f3b9c7a33ba21afbe7b9b2997f5c1a89a6fbb7808ef274d889a25be58ad395d7e87304189551c",
    "signer": "0x223D5f51f92558c8Ff07CEe4Fd5478570Ea071cc",
    "userId": "486317678"
  }
}