{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5f7e1ded0d52d71a4d5c1ef643853f065ee64b321e6ad5e8e3c6615d9088df8f",
    "signature": "0x242ab4120a96020c21244751f15e7fc95e32b02f5bd9e346749513f21f1edbf734cd2ffe8735ec2c8f44e7c1ffac6a2131c1573d85f328a5e4c1d3555421b19c1b",
    "signer": "0x3f046e31D5a52E83bAFc7AD455c0F26A5aEb26BA",
    "userId": "316400502"
  }
}