{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7444",
    "entityType": "User",
    "nonce": "0x98bd93c8df619173604962bad747b2820288df824cca5e23eb46ef55cf99e909",
    "signature": "0x45cbff83bd2662653663168aa9f4ad839877c9b989badbc6cccf4a7352f1051f57d9985ce3e5d5e6d649f928f11438b6e490d79b8e12f6013650341ec610d9f31c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}