{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xea259b8009339e44e7bfd285d98839ccb425f48faf78f33c3ad3d99d62131538",
    "signature": "0x7a55ff0e18c435ce6a34fb76dbceae847f49d38af86984e064f2608a19ad4f4a1ec9095e4f3c6d69c93d77232d80966971364b90f04bd493eab103c77345b4b31c",
    "signer": "0xfa9B8E8aB45b529B50375EAb5aC568fe6F06C923",
    "userId": "823726150"
  }
}