{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1409f4f489ab5b8a39560ad8d49d07a22b13cb8f18483846d3294d7ae9b16f4f",
    "signature": "0xaa1b8b124a591f15c9a68d5713fb84e341b76784ad3c31d1669bae342e8e7a4945a7b1d433bc2f9a6a32391dd8fbb6922608d9b26aa32e9095960586aabd71f71c",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}