{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "155973826",
    "entityType": "User",
    "nonce": "0x8f74bd926c58d4f00a46eb32828ffbb3d119963d883b85fbddafca7a51823a95",
    "signature": "0xb7f0fd3f745f5a5dca51a6541d6e235b597286124708a4ac2bca826337cc3f9147353908ed7b3c0c72c28172ba1c30556d6d07166a49612a837f21cff834a3001b",
    "signer": "0xd743f27Fe67e4d7CAa0d8D48e64a78dD364B7c67",
    "userId": "157919"
  }
}