{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "222",
    "entityType": "User",
    "nonce": "0x43fa258bda1ae0acb55bc1626e90eb0f2a70c9fae1d62355c2622c7d7e36677e",
    "signature": "0x67ae03475ebfe63b40230aac248ebb9581433f50893bb87ad74a9b12859cc18c4c7b820bf2bfb874a3009c0f1a136e671d42b3d4681ed8a009433d3d456960c61c",
    "signer": "0x406e72F6E0477C3f341Eba89411b7939AEF4533B",
    "userId": "50722"
  }
}