{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf912c0dc335df546ef9740de0cfb6b60c96b335de2efbea103045810a8afd267",
    "signature": "0x2eb8072dc0f730bbd12859c3db78b02934d3a122d6f44fc9a347a64b01ab4c090a0c9b0bb5b12d6d3a66ea736ae746f9c717225e56b407ada998cb0266cec0911c",
    "signer": "0xb3C2a6833B87e91813Cc8427Ab7474de635a4915",
    "userId": "143319601"
  }
}