{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0180ea8e93947403ec238c22b8e6ff5bb95c721a1843552a5647daf8807d737c",
    "signature": "0xf17d3aac98a01d4f3bb1be098ce0e23106cc8fd391b2bda610669b3bd477e706107d8a230d3e95a591629a79968b49db1a7e3d61dafae6527234dd89f75f1db11c",
    "signer": "0x8E172f61ee2C8043C1511347070FDFe560944Cb4",
    "userId": "419596826"
  }
}