{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "754884",
    "entityType": "User",
    "nonce": "0x33722ddbf2ee8eadaba4517c7f90a0ca319c31d4a4191bb115dd972186b7a606",
    "signature": "0xe8bbf09f5acdce62dadcecc69d71c67a93d0ac7d30abf13538aa0d818ee670ec371a135f845ec6fad79982178d8844aa2848214d64bab5daad9a49af9877e4c31b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}