{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "739877",
    "entityType": "User",
    "nonce": "0x40e3636a2ec59f92b3e6b485f6e2c883680b731a14b29a3bbdf3be2480724385",
    "signature": "0xa8286d9f51c20d18cfd028d27f6a528547c468e9e703eb512a477b829f74843f1f7f8bd11953ff4d81b01cc5afe6ea948c43c99f916d2b3e5772727273f76f041b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}