{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xad1e349fa76c6d72d2bd0c52dcab0cc4e9130e9aeb2d8d9b1d239fa83f9b7c4c",
    "signature": "0xd32511803a806a0e11ac654bf5d9745481f2c686ba1b8bd6309f876fa4c2e6e26fd8df2aaed33e114010abbf5fdd344a85ac76507caa05af9cb89299369249801c",
    "signer": "0xA3a5D9709D8514b82b91927839eE75fD9458ef9e",
    "userId": "295803445"
  }
}