{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "489026160",
    "entityType": "User",
    "nonce": "0x145c68ea4fa04745792da024ccc8f6f9aafc9081500b76f8e874d470bed1481a",
    "signature": "0xc09ca7f305b1647c26744fad6137ab152217a54bdd608ec14622be55a6ae5c8c48448c47b042e6a132d91819abd482e54197b045ec3afcdf87b5e2bbf02bc51a1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}