{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x14647809a45c57de3017b7843a25a6f02887ea84ed55c43df6553c341b96591c",
    "signature": "0xcd7fb4a384744a7c0f43370fa59db9b877add0350337f10aa63a6920270a62a7132ea0edf3e20f92c41c1b7850cf268235c4adf3a96ef74ccb8cf043e2d2c9a81b",
    "signer": "0x661bc974c74EC62717064679594BF10c602313E0",
    "userId": "943930963"
  }
}