{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x83840511195280adf49aafebf79e88abef1117f43bf28c4494cf0f40bd980585",
    "signature": "0x69fd0a0c8432bccaf2d1b5ed474363737a1966f349fcb51dd5e0230b81efcddf5bd95e77686005ae36c2d46e9ee4d8bf9d9229e215c076b7eb61574bfa51d20d1c",
    "signer": "0x0Ab7f975193aC76cbb68EDD5263b8B03AE56c565",
    "userId": "328477297"
  }
}