{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "512214950",
    "entityType": "User",
    "nonce": "0x2186e159dfc7e220e18e53764276c5d5e4a30b870350ca2147be8e29cd15e241",
    "signature": "0xcd89e79f4ec190351b831bed8c2979a94964a92b2a7546ad9f4ee58d5222d7390b50a640e7d1680de1a95469169d416c939f90f309e367592bafaa2795ea4c841b",
    "signer": "0x6Af6D40d1d0B48D79D2bd3E3c8f0a45540130c0F",
    "userId": "89433"
  }
}