{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x87ec88f8e33df286597a026b7a12435a4849ee202c531ed8c0cf379056a12136",
    "signature": "0x504a3060636976f55ccc9826af15873a63f243719afa026a8bed8497cc2514c3518f658db35eda2f883a337188cf6a2847010ee0c0fec2001bf4460bd06ea8741c",
    "signer": "0xcc175246650538caAa42B8193356861481321dc3",
    "userId": "245020470"
  }
}