{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "10308",
    "entityType": "User",
    "nonce": "0x92c923a46be4153843e087c8fc724964ead6b6eefe59cb1c85d150a6d0ee661a",
    "signature": "0xb3e3d60ace96d9e63864c0cb1720ad177d66e3756078943a414afb5d351e5bdd6b33d99b65d9936b3142d24dc4e6126904277446c00e2b2c265bf4112f96ca571c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}