{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "406225571",
    "entityType": "User",
    "nonce": "0x80b17f3fec00ce2a6b6978e785f88a86020e58b551b98179318e5d2530ec495b",
    "signature": "0x385517cc308e74d1087631bca762ad7dade89dec7a6e00ae6e4268cf8e4ae8254b66ee23edf87d6a10b0fa44f057a0b72290be8109f0b09165fc4338849e276f1c",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}