{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x683b116b05d0628e71e0cec622ed720113cb626b0d161990dc2e7cecfcb80307",
    "signature": "0xf5d7b944f3936511fe64b6c7c11786e5a434d906b90ad0f273441ad9c278c2b2630cf8c2518b49433e57a9930226e7ba76e05f2d614cfff80601a4ae5d70e2791b",
    "signer": "0xd4cE0e464BAeEd0785D5f747Eb29620b73e4CE39",
    "userId": "181673123"
  }
}