{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "128010",
    "entityType": "User",
    "nonce": "0xabcd7df5a0e388697f11fe27622d91ad2f1b8d7f3067b2e5a3c5a7dc3d40ec78",
    "signature": "0xe14cdff5d4ab4ee864f90bbd421768d945629e48017b84f10ccdb83bcf53195040e79b2969e2f855158ced0d01f4e2d6ca0375adcb01707f92c25bd9989695681b",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}