{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "187397058",
    "entityType": "User",
    "nonce": "0x73f028a30184d8cbebcb69196469c3fb7cab1feb3364ea8afb73d23c9163666d",
    "signature": "0x09a9066f7adb0f3c3c1ecec2d4deb45b41b69aa0fdd3bfecf570b387d24e8b5162c7aa5153102fe8beb10779bf2693be693f87572a5c44d14f4a4539f13a8eee1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}