{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "73884",
    "entityType": "User",
    "nonce": "0x5bf7bd2198a16bfa8ca496f72ebb506df9d591fa28eb87c20d613c8c16f4084d",
    "signature": "0x4461060653ce2b3961a96b54d2a570a1bd74be0cf8802fb4ad50fdbdd1ce28453cf3a2f24905f29e1030a294cc524c3a3154b308ad7ae619c604948762270fd91b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}