{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "19964",
    "entityType": "User",
    "nonce": "0xb13b805496df9d3915395f3a95eb1f688905a44418ea1cb21c1d57766e7503a0",
    "signature": "0x7cc2d2515f79b8a3033bc7572a1a7de68708e6eab73dadfb3818daa7fd0eb29e5ffbae22d9fb4dc65a9e2bddbece1f0e8285ba5ab4fe9d513d1b99c8760913c91c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}