{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "63321",
    "entityType": "User",
    "nonce": "0xc03b53779bf4cf3d8997ee66d5f64993398c69fb8bfcc344256c00d92975d142",
    "signature": "0xca943fd8192eae90138faeb4d6cbf8a4ce73932c7a6561fa0cfe15492c5e93aa398c9256fef0c6422f3c40d17846b52e2c13f15c8f2a6d945a71c481288176421c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}