{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "663933",
    "entityType": "User",
    "nonce": "0xd608fe38e7d694f94bd6838c92bb0c43461921e18edf874962524de6f68cd5a0",
    "signature": "0xf82fc03f5f5401d78d428d29a6e2e0965808c7c4ffc41e5a9c2698e494718d8e22f85aa627975775a18ebfb9518cfb150289b0c37c6701a26f2f82756dbbc62b1c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}