{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "514442096",
    "entityType": "User",
    "nonce": "0x8c85bfc6347ceebea1eb8e219fe3b090d41f40f3d20b270be95bb9774b11cc32",
    "signature": "0x3cfb22b66d3d160ed254266ae0fbac97cf56aee7e54b0b8cbf3f3a577c2fc21015eb58da5e7fb97a8b6ed5ca32b908eae45f6c56aab581c5fdd9a36b1c014c511c",
    "signer": "0xb6B208a8f79b1D88d245afa5aDB0a40d38cd6DD1",
    "userId": "528688046"
  }
}