{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "420620027",
    "entityType": "User",
    "nonce": "0xdee7348f33b5f0e3070242d8741c8e312baf2f616586fe269bf7c5077abcd327",
    "signature": "0xfccf4786b867c14db2254b56963a4d8db0fbd67244a1fd2d0446cacbcafb64b1785286fa6da81edc3349b9a975960161bb86c356ffa645732e366aca760b67ca1c",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}