{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "66005",
    "entityType": "User",
    "nonce": "0xd39a8d7c20a28b8671e934af581002ca3d3b3d260a69b7343060f77c65a6ce7f",
    "signature": "0x3a27d4b5c8a59dc127420fe4f4792a8f052a22739ba40e2e27663fa6086aac103df46aa4f5ab6b98d18e7f3c5d4f3b2228f36c59403dbde4d5d6d0e9ea3de7bc1b",
    "signer": "0x3939e302479fE0F42271820cd8E0b44A47273209",
    "userId": "540529323"
  }
}