{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4ffe235da2a1e96a280fd842a49c7609804a8f2068bb24fcf753e3db80b5f2b2",
    "signature": "0x786578d5d0ab11baafc5953c4d9ab8a3926fd3c15a0353d93b4351a174d85df53bd296ecd3ec97afaa00348953be63c957519751872f3c1f4f846cbccd1c2b171c",
    "signer": "0x9Bf41f645d6e166eDDdE00dAf52Aad041C867212",
    "userId": "156528515"
  }
}