{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x83295397ca2acb4942efe6f95b6147b0c3fd6727c0fca384da85da3633236b0c",
    "signature": "0xb43ba21d08660893f36e175659cf2739c800f8c03c8f974f3f4d96c1f441fff42c11c07cae5b7c4f3e7daee3043860f9ecad98ee938e046e977c44dd56ac265e1b",
    "signer": "0x5148115eBDf0d33ad5e7B95c0bC8897aFF0aB1Cb",
    "userId": "740998209"
  }
}