{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe33d68a1e120eb4b96bda991b2516e7900b2ef75777aafffab131abb810c0da5",
    "signature": "0x3baf242d5f2bdcd920c276db36398d896199789230f34cfdf612f895dce12ec1313cad7cca874b92627cc8d96ff35ec3d856f9d4e8458730ae945dee886001891b",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}