{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4155d01b1e157e23481284efb429e00e2d3675431d19c144e50fedc8178f55ad",
    "signature": "0x066fa13bb0cd0358b9bc34ab28b58924e7a6221e43ffbedcab7e41df7afc280e0ac3d0ccec61e86242d70e65a9edf889ec82841a35addb8484d595b3acd4ddcb1b",
    "signer": "0xf9Bf82B2ecB609ee37250F00C0835d529331385D",
    "userId": "654530894"
  }
}