{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "509",
    "entityType": "User",
    "nonce": "0xf47151f1b50b6164347f39f2b09e0e81907f155f0ad7db0c442a40c14363e6f5",
    "signature": "0x3636a3bf4ee6ad0f66125d7dd7bb522252315324fce9be7963a4564f2b3065610153f6afe5c538a89086948215bd193aaad6750d3cf30883427a2fa805fc7e221c",
    "signer": "0x5617e33979Af319eD3a9a6bFF820d69b7e8877a9",
    "userId": "171261"
  }
}