{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348635338",
    "entityType": "User",
    "nonce": "0x8c613289800f9c09c29ba55d6b2b811e8f14b2a608c86c9e072ab8f0d2819474",
    "signature": "0xdea535f2f3ec3f03edb8f924aa9a4705fa2a330564d90b986b8cc3fb54ffbbba68c32b55428cb54adcd410d91a373703a89a6f4cf69957230398c19d9b1b8dd71c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}