{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "556395670",
    "entityType": "User",
    "nonce": "0x9199a495b5f4b8824bcf1cb0dcff8c09eb3079e3ca7913e729ba918bf92091a2",
    "signature": "0x4654fbb24e577a291eb7b33abb870460a3d7d56ae8df4150fc9d36e257b3e81837798fd27741b73ccce3c7cf3ced8d280b252fa20b334ce765afb29d364452191c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}