{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75740",
    "entityType": "User",
    "nonce": "0x60900c7e512d7ea05e9b4b47de1bb27b37354ca923733fc2e6513b6a583ef99b",
    "signature": "0x1b046ddf51aae051b42e1f4e77797b3d3f3b0b0b77244c3d795c68844b6969da2a6b9ef77e8a1d081b776e3b5121f004c48442a641135d19750afdb038e3263f1b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}