{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51243",
    "entityType": "User",
    "nonce": "0x06a5cf2fedd0f453618622e0e143a68ac150dd29487f95e11351d29b5ea71415",
    "signature": "0x5ccbb85d14bbad85b2f0cb29135733d3d695febf4ae31ba6b71b1891e7c8662b7153657721f530a02c160c061c0750bf7040d623bb502a03f3a42546ac6190b61c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}