{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "320009",
    "entityType": "User",
    "nonce": "0x84200a2ef3723459c741e5fd736029521808c79eab40ddef629c652daa8ab1c5",
    "signature": "0x687cd31469847cbae600853ee84e4bfc0b2660865deb8acf06cc39199da26f512a654a94935863ecd6c3f2c38a520670ae4a5b5fcf18a2e4bef87e8515cf37f11c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}