{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348740",
    "entityType": "User",
    "nonce": "0xf53b6620058c93f8725895d20df5d9b0c9e0ddf731d1964c34a596b49db0d8c5",
    "signature": "0x56871fe24fc6b82ba6b35701d7c3e2a59698fe2a0808f5be469fb001b45088b35e66e7ad9f9da4a72c061e42fadd1f5f804211c4b9860fbd2cb79aec916007e41c",
    "signer": "0x975699e892A0a2f2f16d2b8950Ac7C882B8EF555",
    "userId": "544952248"
  }
}