{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa775b18844443cf4a9a3e7cc626bff00c7f7aa595fe5893f665568ae13c8ee26",
    "signature": "0xad42d746453513ef8e7fae15018f4c5e749c1a425a824e9024abd5f92fd2362e1983d630a95363db4b754ed78457dcfddda368d1b25c640de35d8ccb6e02997c1b",
    "signer": "0xD0c621D41285D82d797AABd11c9CFc584C29f0ED",
    "userId": "940797535"
  }
}