{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "103230",
    "entityType": "User",
    "nonce": "0x5d15c19c74994cbf3c0bfa5b74db604b78aeaecc5841dd8d2b1ca2d13db61036",
    "signature": "0x2c8c0f99ecfb540cf287ab75fb1d998630cb86a0aa0d185460e31e5fb5bfe1505b87e3ec50708f7a5b8c1cb74fa39381cc502fb1638473dbb8e9b99415dbaa501c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}