{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "172280",
    "entityType": "User",
    "nonce": "0x64c4b5c681d277618caff536cf2f1e2b978ef667e7168056d1cefac7c35f6fc3",
    "signature": "0x510e1af904da89c34cdb673695e2e997a6c80f48b01dc8384ab5e6175edcbc4822b23401f978343939a2ef236145f1cba5dec21182b2cc31cedc7283387f0c221c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}