{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4be69a76d9c098cc46f4e869bc4bd90f4de3c7b20a2898e711998e3732b97062",
    "signature": "0x1871cf71c4c6edf9327ff2f48538a9af9ff549290765c8fe7d9ad90c0451b3f433f4af9a1817e9b32b58bfd4a9f62b96e0ad774e0328bd3d6ab04eb6b9dfac211b",
    "signer": "0xAD64DE85d51a9A1F8e9E1D46641d088C99419941",
    "userId": "347056744"
  }
}