{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6ce8387521ac64ff3260a5b069fa1eb00063e77dd285ffc4ef496f93e61f6eff",
    "signature": "0x40a23a93211e9a58e765603a343f8a60393b43fd62b7e75cfe649162b6f483496061dfdb67fac2682fcc28c0e6d5ce5ad3e9eac5558253115138f4d6a1e061991c",
    "signer": "0xce728805CE8D9389db39C026804151A65D5e8c71",
    "userId": "321430592"
  }
}