{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xec759f624d402d272c7be18fffc141450d76401eb1249416fd6a55e017ceb8cd",
    "signature": "0xed37bc8540b7f7b63f426bef01280f3354cd890366e47eafd767d5b960f1720b7eb5b447235c6360581b028dd79df75bce7caff32e7136d14287780ba94866cb1b",
    "signer": "0x4E073b7076371ff6Bf848d0B4abA785B38B5ff1E",
    "userId": "303393509"
  }
}