{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "30576",
    "entityType": "User",
    "nonce": "0x5317996189f68bf4a14f554e4c987c5e7e9a5008d4432016ba5faf3c8dbddd6a",
    "signature": "0xecac66c581968413b9e91fdfc5db284be6fdf0e3620c4c73b5c6f88d2959839e7c1dfaa9ec3edff86628ccc16795bf7171ee515bdf4f2ecbfc0fdb6ee9afecf81b",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}