{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0xdc57a1f0e34009a4bbdcc1baf0a5702850c8293d249a152a2afa1faa8883ec25",
    "signature": "0x2b6708c3d3c884db0c57c67787fc399d338c1684d2f032082900d5b19e199cf9178061562222a8c30221717d42c80700f091f4f04f4f48221ae865990d51b0a91c",
    "signer": "0x4391C746E11181B87164C3C6DcB2EA773D749ECD",
    "userId": "729432364"
  }
}