{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348435",
    "entityType": "User",
    "nonce": "0x3f576d77395c82d9880bff80f8c39b5eabee3691283bf9d31754db5e5e64d864",
    "signature": "0x8ee8c8a523928e96a7351e29094c7cb41c0312f9ac28e3612412fee40b048ba677d397aaaea11cf0f4662704c427cc3aaa7f3be229ee3d354f49a37a7ec842451b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}