{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6f22d8cdcc5e29dead69b79d9435052b8933597def75612822fbc76dbc001629",
    "signature": "0xb6ab4c04b20ed2563a5f7dcf18aa72f7ce9bc865b6585a6b9b849525407e9a9174046695c93d82373e0cf6f678817346244e8ab61cd72825bdce71a28421dd1f1c",
    "signer": "0x64F598C81c0625EA190d421bEe9C604A9EaD5ea6",
    "userId": "462839245"
  }
}