{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "502385335",
    "entityType": "User",
    "nonce": "0xc512d64b38ce8c9ead28d02ebcefc6376f6ec1c340538e547f032f7ca95f0c8e",
    "signature": "0xb79023040feb18100807ad3af7a02da6ec2398479590789c5ba8f3dda3ce83172a3bb701c91fd89c732f021bef41c09c4d38de6abfa1866374ff7f88f34f93c51b",
    "signer": "0x94d1769762bc3a1e7DCd3e8a31C89Ff199833Da6",
    "userId": "715573876"
  }
}