{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1898740",
    "entityType": "User",
    "nonce": "0x6181efd52c902412a5efc6fd6f8466db3a8b9afec85380efed4959249cef357e",
    "signature": "0xc96bd53afda9477a2645cb673b55ee1d908fdee91564f576b62edee69df86b9b5e53efc6fe1a20d72412332728c45003ee4e21f4f677bc3f2246138099bca5881b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}