{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1512626",
    "entityType": "User",
    "nonce": "0xe1fb1494dfd6e10279b1b5a3a7616703ead13115f66d51aa8e2bfb0eb30e8af4",
    "signature": "0xe13cb79612e67be8f1dd6b31bdc0bb940be42949cede7a361eb6620172dfebce67857b9d75c61409ead2460f3863dbbd830889a152fc1aedfe6ba52ab1a094881c",
    "signer": "0x90d627796C9E2071AAd9F8C20f6dCE95587F6d13",
    "userId": "560619378"
  }
}