{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "101876",
    "entityType": "User",
    "nonce": "0x990e0ef018877755519fbdc99ad99305561aa02e4adf0431c425ac674d16d07b",
    "signature": "0x8e7409e70c4906208983f9d4b58b21b30f3056bc7ffdf13e06520728b788d5fa767d0e86c066b312a23d184494042fca9315746d32ddd4f26adca80725e0fc231c",
    "signer": "0x7Cd44Dc53B13eEA7335A000Ce36c05cDFE34b348",
    "userId": "355113"
  }
}