{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "318823",
    "entityType": "User",
    "nonce": "0x1e3a440a080723f8b47668044380c5c72d2cbf5509341a5a2a5f87bb68f31a91",
    "signature": "0x25aeb1bac5cbd10060d1c995d23ddfbd275f7e090eed8e32649daf3211ef16a87d25796bb0984823fb59616e9b3d7119f2f1c0fcc0ac5aa6ce5e66440d957bc51b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}