{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57546",
    "entityType": "User",
    "nonce": "0xfefa43d63d584b616741a9f59bd538f954e8465072466abe44f9146e6ccb98a8",
    "signature": "0x4f7207b9fe3fd4b74f7122bbc286daab3f11af0dc26aa8bcebb90a6a130b3ee53e2fd661ee5c88c04647b5badfe5b550abcf51b9f82bf059954362661452f8471c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}