{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9879ca8ff35b8eaf237f03eded49459ea0a9ace44e61c0fcb5db1fff415b777b",
    "signature": "0x99c20db8474c8eaf3d7255d9850c4d4f8aa7f07002b66312960a0386f0028646007f670cb6183e2f6af6ab1bd7417a99e83f362e86f4b506faf0c56df540e4341b",
    "signer": "0xB9eed62bBE341044AB03f1DDF57b967A6abAcD35",
    "userId": "18054566"
  }
}