{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "515799257",
    "entityType": "User",
    "nonce": "0x77a40d0e6c6525ceea9688fa5022bf2cbfedf979c1f230d2c19d8caa00628b71",
    "signature": "0xd861bc6e9dd8210a760ed65f6cfbbe836d3385a67f5877f3a12f481669ce52be05f5545bdb1ab5f37352b4fc2e10675231ce413dcb88ac8c32c73833500294ba1c",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}