{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1721",
    "entityType": "User",
    "nonce": "0xbc41542941afc36cbf5537e60443ebdb62b1cb9e12b8f4cfcbbae8b42dadad4b",
    "signature": "0x986a71a5d4b38f42f342a2611945e7cafc654b30bc6e89c3756d6d867669c00035c62b1c90002d65f127d76f23865ab0d246af6eb0c2690bb000771d32d0e3041c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}