{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0xbfd7ac6311538a6b5922b796bbfe5c3802e7bada18ad94d384f7844a00f8dba8",
    "signature": "0xf2af92e75d9e126afb7e765d4fef19e0e078ba286b6ce07bf3b1a724ce6b2d3f4c45b8579248d3356a2a2d5eb70d979f021118b1c744b2984ea832903b62fa461c",
    "signer": "0x4d6701aee41cF386F0f1Dc360F47F200983c6c62",
    "userId": "454478631"
  }
}