{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7498",
    "entityType": "User",
    "nonce": "0x3bdb9c5037ace017dd74f4e00eb7dfcb12a9f3ee13f55b033ee99fbc0cd9259c",
    "signature": "0x327a18dd50d1a1026022b05b82edbcf6b610a99c0b1943b390e9176e4ac1449838042a0599e6dbe200e080d71cad50dbdf756c190ffad671c75fb2a455548d771b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}