{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "307951199",
    "entityType": "User",
    "nonce": "0xe4051874b6011f863cf04fd41b9b61bc46a1b56ffbcfd1b537ecb185c0dceb4a",
    "signature": "0xb0292fef6f9989cfbf56182dc684da226e3f342282da2f015141194e584fd220294eb8827cddb28eb2471b44cb9f085a3b1768179a6ff0d5f65d000e3fe089251b",
    "signer": "0x443e60705Bb4473f37a5c0f34e9E1DDc452B4197",
    "userId": "532926441"
  }
}