{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcc9af1787889ab56aeedf6d7e5f3b98362b1a3f20d5bf2ea401820e3a212e8a1",
    "signature": "0xe2d3f51d78128e79c879116d289a77cbe7a0678910cb0d8343691030c57d8ff221acde22324896de58c03f6a617bd0fb3d42c482072d72b94c049af3aa539a431c",
    "signer": "0x7b4977899719ab5736979680e65f734BCf28Aa9d",
    "userId": "949240629"
  }
}