{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "450928854",
    "entityType": "User",
    "nonce": "0xb18c1fb96914152c43761871db349e9ad2611bae93ffc3145847ba5423a34403",
    "signature": "0xae1e2a58e13d2fde69956b4cfc64d34da0cb0ebf5e3d94cf727db2cde7490fba77d7bcc9739f2a191179013a0002655e4dfb69ff72477a5fbdfcfee3735a820c1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}