{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319048",
    "entityType": "User",
    "nonce": "0x7de23e6a3151a50c8f67c506d61da2e684aa5530534f0e113bc1b593e0ad89cc",
    "signature": "0x87483b9d8b6dbb864041fb60982d42666cc2df78606e42583e6c7252729b6d6f46369170ff6110f67d5be9898d0d4c8710f4cded81899f40aaa4406f6f6a3f981c",
    "signer": "0x9b682c779356138D1D188CAB373b0F44a2d43d09",
    "userId": "512022848"
  }
}