{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdbd275cd3aa709aa08146ef9a5daa4ab7b8c76854a591ab0deb925df39e7294b",
    "signature": "0xfb7ebb1cb5b34c03f94e28479ca6db48f5e3f3473ed213b977d9e9c031c7258c2480ecb5caa1387621fa021b6c023a12047ccf687ef0e270ddfd1e807b6d4cae1b",
    "signer": "0x3A99Acb4Df313E2773E801a840bc04ce72332909",
    "userId": "391391717"
  }
}