{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3ea0439925552454cc673cf9260b4f31db6d01c0cc74b032501853863ce493f1",
    "signature": "0x97d36369cc9d5f28dcf7d3b534ada78bf2a300bffa01fdcaea872ef5913dc92820e61bac74afc0fd809d704c890012585c668af2362d7ebb32854bb8211f527e1b",
    "signer": "0x5AF6999E1d16951c076D06BDbD2E411a94bC8314",
    "userId": "765927134"
  }
}