{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "739472267",
    "entityType": "User",
    "nonce": "0xe0a3d4cf61688455dc18e55358ca04388e2f15c560f6f4741028f378bd26d61b",
    "signature": "0xb4fd0077c427a0b013a23fb9310fe91152ec0e66babd62069aae985d80bc408948b0dcff51536c9646b4a6546be27c18518889e1dda7fd7890567b94f64b1baf1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}