{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540848139",
    "entityType": "User",
    "nonce": "0x53351ea76385cb0d319d786de7a6c05c8b2e35850497b6ec1beb65a8d72c8297",
    "signature": "0x54a60557927269b60e7ff7d7db363bd64a827e254e2ad9066df271f48b8a1a6b5723e84dacbd611ed7f478fdf15cdd5bd825485b190801e1600bebc04f847bdb1c",
    "signer": "0x4B8960b62360073E2472A74bfbd80138387fE211",
    "userId": "86339"
  }
}