{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x111ad0d6b37a1c35e7c983d2a631f5618fe4d197bc372df64fc36e88c991de4c",
    "signature": "0xfe44f0c0ba87b04b53ee778d3716d19ffdf70e98d564d5bbf8fbdc9c42cbd73e19847561f895e4b40a765d434d978371a425b5ea9a067903cd04fee3b28defc41b",
    "signer": "0x7f61d77e2C8991dDA50984F35d04D02DFFE561aC",
    "userId": "821028779"
  }
}