{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "904230991",
    "entityType": "User",
    "nonce": "0xf56ac279ccd98f08738224bf9702c70104f307899dbdc66a053ef930f3f70f60",
    "signature": "0x31a5c36ff9a39aa99de053807a52723ff4aca3dfdcc7089f9a03298b274e0318123bc5e857e4b98f080299de8cfd6ed19210d93e548712549d6f4dc56437fa1b1c",
    "signer": "0xD4Cafb7f9ca72Dc91b76b7a5f46778B5e9CF25C9",
    "userId": "656918811"
  }
}