{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe456b23d5caa19ce177f671a26e6cb067f2a9e25819537554a55e5b3006799e5",
    "signature": "0xaaaa1954ed7fe8c7f0f12fa223c26d3ef8002992f2ebbcf3b65a81d8efe529206c9fba767236913ff0e5c35a1a43aed6e1addc08114412e5fd5d0174f83a8c3e1c",
    "signer": "0xf7d896198661254Df9AeA6781fA5B26A74E5F8f7",
    "userId": "452692713"
  }
}