{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "143358",
    "entityType": "User",
    "nonce": "0x1323d66463365be554f4b1d94ee53e38796e4f0dbcf3a25add93ad7d95d81f8e",
    "signature": "0xd04fb3c694fb98ad36952f43b9186747ad3a369925e475be60cebfaf267dc86629c99597cb3d9198a2d9188f64aa3318a98ce686a8c6b2098567f0c0073924451c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}