{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x526af68ff6c673a247027afa4a8357443893a960136f443d5b554dce82f3c88b",
    "signature": "0xcf62dc4365fd7f39b3ecdd82034a8ab06b04a8ce8bac0492e9138732045f4f7e5a96429ff418bf043e63376a54f64a2254a95040095ec2386c5c22ba5865df171b",
    "signer": "0x245cEbC9574d38Ba138112B36a6ee27cFCF48cBC",
    "userId": "75458976"
  }
}