{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "63401",
    "entityType": "User",
    "nonce": "0xd4623226bf76f77a502f67ad51608755e5cc3ccf18aeee8b304ffdc32d677448",
    "signature": "0xd859e6fb6cc605409ede26d8bb16e301323d5be0163c992f7dae0e04885347395b797d55ca7f3cc9560b84d3aa7eac0b23057a27ed5ee72414e641200bc2b74d1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}