{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb8ce1f15af1cbf6c0257ef13b6187f80c16d33c0c96e860eecf350d3627c7b5b",
    "signature": "0x6c399b09e462fdac3cef5bb5da6b983e8a5660efe489a8fe6b85af200526dc99664e4f30e5e7d490c3ed90cce8e82d79776341bb6c0dbaac808523ebee6b86701c",
    "signer": "0x1A03dB80e576Ab52a1E1852ba81778ae8f8f3f95",
    "userId": "876735576"
  }
}