{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2019421",
    "entityType": "User",
    "nonce": "0xc80c4219b42c19b9fa02d73a9cdc73bce76dcc5480bcf088301eba5ef65e0ce0",
    "signature": "0x52ef7de4238f92d1ff1ae3e2d94688e04ff27d1f65875b90991ba212fbe0d2a426680563e062bd0e80430bbc9bd2ab30204e44322ce57ab456106f46448f92dc1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}