{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "150693",
    "entityType": "User",
    "nonce": "0xe48fc56b1b7c43dcb60e8a24d15228444e2ec7f60200cda8575176045b6e5174",
    "signature": "0xe5b5f283542100e2a47c9f96d956724b09f376262342a1cbce28b492abbaba614329b9173ec7c73c07cc0fa8c63ef8b6fcd353447a70855c704bad93eace15981b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}