{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "780130325",
    "entityType": "User",
    "nonce": "0x2e00859f239592ea56b5b94ad35ebf0cb7c0dfd1b681c7652c76d417e22dc539",
    "signature": "0x9190d926df513a7c723c1965132f0b6465ad578fd0ac3192a8a83fb2aff68c4a7fd22b2b061e7ee2474ca82f83226c305c7131841fc09203eb415b6b66dc3e8e1c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}