{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5c395aa426cb75de8cca8a35b3eed4f7f71ab87559b3e77feac5c7057fde152c",
    "signature": "0x6ef15eb704be6081931497773564c8ca4eb9a189ff2a160d34ca26058bba4e960e59315455aeaa88d15d1e08b6f81b0eb08540f39638159e36cd24bc337475b01b",
    "signer": "0xf6c9943016137F3054658e7E14F51B6d271aC325",
    "userId": "644767279"
  }
}